class_name DebugDraw extends Control

const COLOR := Color.ORANGE
const WIDTH := 4

var lines: Array = []


func _process(_delta: float) -> void:
	if visible:
		queue_redraw()
	else:
		lines = []


func draw_vector(vec: Vector3, origin: Vector3) -> void:
	var camera := get_viewport().get_camera_3d()
	var start := camera.unproject_position(origin)
	var end := camera.unproject_position(origin + vec)

	lines.push_back([start, end])


func _draw() -> void:
	while lines:
		var line: Array[Vector2] = []
		line.assign(lines.pop_back() as Array)
		draw_line(line[0], line[1], COLOR, WIDTH)